	var timeout = 500;
	var closetimer = 0;
	var ddmenuitem = 0;

	function jsddm_open() {
		jsddm_canceltimer();
		jsddm_close();
		ddmenuitem = $(this).find('ul').eq(0).css('visibility', 'visible');
	}

	function jsddm_close() {
		if (ddmenuitem)
			ddmenuitem.css('visibility', 'hidden');
	}

	function jsddm_timer() {
		closetimer = window.setTimeout(jsddm_close, timeout);
	}

	function jsddm_canceltimer() {
		if (closetimer) {
			window.clearTimeout(closetimer);
			closetimer = null;
		}
	}

	$(document).ready(function() {
		$('#jsddm > li').bind('mouseover', jsddm_open);
		$('#jsddm > li').bind('mouseout', jsddm_timer);
	});

	document.onclick = jsddm_close;
	$(function() {
		$.each($("#jsddm").find("a"), function() {
			if ($(this).text() == "工程硕士" || $(this).attr("href") == "me/"
					|| $(this).attr("href") == "me") {
				$(this).attr("target", "_blank");
			}
		});
	});
